Two-wheeled vehicle



(No Model.)

W. M. GRAHAM.

TWO WHEELED VEHICLE. No. 369,987. Patented Sept. 13, 1887.

\A/Zneesee. In amnion UNITED STATES PATENT OFFICE.

\VILLIAM M. GRAHAM, OF KALAMAZOO, MICHIGAN.

TWO-WHEELED VEHICLE.

SPECIFICATION forming part of Letters Patent No. 369,987, datedSeptember 13, 1887.

Application filed May 16, 1887. Serial No. 238,357.

To all whom it may concern.-

Be it known that 1, WILLIAM M. GRAHAM, aeitizen of the United States,residing at Kalamazoo, county of Kalamazoo, State of Michigan, haveinvented a new and useful Two- Wheeled Vehicle, of which the-followingis a specification.

This invention relates to the ordinary class of two-wheeled vehicleshaving seat-bars sus pended over the axle; and it has for its objectcertain improvements below described and claimed.

In the drawings, forming a part of this specification,Figure 1 is a sideelevation, with one wheel removed; Fig. 2, enlarged lettered details inperspective; and Fig. 3 shows a rear view of parts looking from a pointat the left of Fig. 1.

Referring to the lettered parts of the drawings, the spring D is hingedto the thill P, or

thill cross-bar, from thence curves downward and rearward, forming thestraight portion which bears the block a, and extends thence to the axleA, in something like the form of an elongated letter S. The springs arehung from the axle by links '0, Fig. 3, pendent from the central archedportion of said axle. The seat-bars 13, preferably T metal, are attachedto the straight portion of the springs D, at the forward end of saidbars, by means of the confining-clips C, Fig. 2.

\Vhen the seat-bars are T metal, I employ a block, a, fitted to thestraight portion of the spring, and groov'ed to receive the lower flangeof the T-bars. By this means the seatbars are held firmly attached tothe springs with out danger of rocking or canting out of properposition.

The action of the spring D when subjected to the downward pressure ofthe weight of the rider is to spring downward between its points ofattachment at the ends. The weight of the rider also exerts a leverageon the forward end of the spring, the effect of which is to raise up onthe thills P. For this reason it becomes necessary in constructing thevehicle (No model.)

to locate the seat at a point over the axle, or rather above the axle,in conformity with the weight of the rider, so that a heavy person willnot exert too great a leverage upward on the thills to unduly raise thesame. This may be accomplished by particular design when clips 0 andmove the seat-bars ahead in the groove of the block a, so as to bringthe seat nearer to a point over the axle. The reason of this of courseis that the axle A is the fulcrum of the leverage exerted on theseat-bars. The spring here shown is composed of two parts lapped, theend of each part falling short of the terminal ends of the completespring. By this means they are strong where strength is needed. Bothsides of the vehicle are of course alike.

Having thus described my invention, what I claim is- 1. In combination,the thills,axle,thesprings having the straight portion, thegroovedblocks, the T seat-bars, and confining-clips, substantially as setforth.

2. In combination, thethills,axle,the springs having the st] aightportion,said springs hinged at the forward end to the thills and linkconnected with the axle at the rear end, the grooved blocks on saidstraight portion of the springs, the T-bars having their forward endfitted to said blocks, and means for attaching said bars, bl0cks,andsprings together, substantially as set forth.

In testimony of the foregoinglhave hereunto subscribed my name inpresence of two witnesses.

WILLIAM M. GRAHAM.

\Vitnesses:

AD'ELB'ERT BIsIIoP, EDWARD VEoEeIvxL wIJ.

